Security researchers have discovered that digital assistants, including Alexa, Siri and Cortana, are vulnerable to hacking via inaudible voice commands. Known as the DolphinAttack, the exploit involves the use of ultrasonic commands that cannot be heard by humans. Researchers from China's Zhejiang University have detailed the attack technique in a paper, but there are so many limitations and caveats that the vulnerability is not something that most people need worry about. The DolphinAttack -- so-called because dolphins use ultrasonic frequencies to communicate -- could be used to control a large number of smartphones, computers, cars and other smart devices, and…
[Continue Reading]